static struct ast_node*
stmt(void *opaque)
{
struct ast_node *node;
token_t prev_token;
prev_token = current_token;
if (match(TOKEN_FUNCTION))
node = process_function(opaque);
else if (match(TOKEN_LOCAL))
node = process_local_declaration(opaque);
else if (match(TOKEN_IF))
node = if_expr(opaque);
else if (match(TOKEN_FOR))
node = for_expr(opaque);
else if (match(TOKEN_WHILE))
node = while_expr(opaque);
else if (match(TOKEN_BREAK))
node = break_expr(opaque);
else if (match(TOKEN_CONTINUE))
node = continue_expr(opaque);
else if (match(TOKEN_RETURN))
node = process_return_node(opaque);
else if (match(TOKEN_LBRACE))
node = process_scope(opaque);
else if (match(TOKEN_RBRACE))
node = end_scope_expr(opaque);
else if (match(TOKEN_UNKNOWN))
node = unknown_expr(opaque);
else
node = other_expr(opaque);
return node;
}
static const char* copy_while(
char *dest, const char* src,
size_t destsize,
bool (*while_expr)(const char*))
{
while ( *src!='\0' && destsize-- && while_expr(src) ) {
checkline(*src);
*dest++ = *src++;
}
*dest = '\0';
return src;
}